thanks for your prompt response, however have this last query for point number 2 please clarify-

can I make my ICICI bank account as a primary account and remove the mapped HDFC bank account, if so the solution you provide above will still apply, I mean if i’ll send the email and scan image of my ICICI Bank personal check leaf, will you map this new account as a primary account to my trading account?

Also please provide the e-mail id at which I need to send the bank account details and scan image of personal check leaf.